Music-leaf turner.



M. & J. SCHWEIBOLD.

MUSIC LEAF TURNER.

APPLIUATION PILEDJUNE16,1909. 960,719, Patented June 7, 1910.

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M. & J. SGHWEIBOLD.

MUSIC LEAP TURNER.

APPLIOATIOR Hum Jun; 1a, 1909.

960,719. Patented June 7,1910.

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MUSIC LEAF TURNER. APPLIGATION FILED JUNE 16, 1909.

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M. & J. SGHWEIBOLD.

MUSIC LEAF TURNER.

APPLICATION FILED JUNE 16, 1909.

Patented June 7, 1910.

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Q}. aqwaw UNITED STATES PATENT OFFICE.

MUSIC-LEAF TURNER.

Specification of Letters Patent.

Patented June '7, 1910.

Application filed June 16, 1909. Serial No. 502,508.

To all whom it may concern:

Be it known that, we, MARTIN SoHwEI- BOLD and J AOOB SorrwErBoLD, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

Our invention relates to an improved music leaf turner, an object of the invention being to provide improved means for turning a single leaf at a time, and returning the leaves one at a time, permitting the device to be always under the control of the operator, so that where a portion of the music is to be repeated, a sheet can be readily returned to its former position.

A further object is to provide improvements of this character, in which the sheets may be moved in either direction, one at a time, or may be swung together in either direction.

A further object is to provide an improved construction, mounting, and operating means for two dogs, one adapted to move the music leaves in one direction, one at a time, and the other adapted to return the music leaves, one at a time, accordingly as an operating shaft is turned.

A further object is to provide improved means for elastically holding the leaf operating arms in their two positions, to prevent banging of the arms against the front of the iano.

A further object is to provide an improved treadle operating means, whereby the music leaves may be turned in accordance with the operation of treadles below the piano.

A further object is to provide an improved construction and mounting for music leaf turning arms, which permit of vertical adjustment of the arms in accordance with the size of the music sheets, and the position of the operating device on top of the piano.

' WVith these and other objects in view, the invention consists in certain novel features of construction, and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure 1, is a view in end elevation showing the casing in section, and illustrating the operating lever in a somewhat unusual position, soas to more clearly show the mechanism behind the lever. Fig. 2, is a view similar to Fig. 1, but showing the mechanism in side elevation. Fig. 3, is a sectional plan view. Fig. 4, is an enlarged view in longitudinal section through the shafts carrying the leaf turning arms. Fig. 5, is a fragmentary view in elevation illustrating the shafts, their gearing, and the means for holding the shafts at various vertical adjustments. Figs. 6 and 7, are views of the juncture between the leaf turning arms, and vertical shafts showing the arms apart and together. Figs. 8 and 9, are views of two dogs respectively. Figs. 10 and 11, are views in elevation and plan illustrating the application of our improvements to a piano.

1 represents the base upon which a bed plate 2 is secured, and angular uprights 3 are provided on bed plate 2, and three pairs of flat springs 1 are secured by screws 5 to these uprights 3, and are made with longitudinal slots 6 in their ends, to permit of 1011 itudinal movement of the springs on tie screws, for a purpose which will more fully hereinafter appear. These pairs of springs are located parallel to each other, and in a vertical series an equal distance apart.

An elongated vertical bearing sleeve 7 is rigidly held in a collar 8 on bed plate 2 by means of a set screw 9, and this sleeve 7 serves to hold in proper vertical position, a series of shafts 10, 11 and 12, respectively, the shafts 10 and 11 being tubular, and shaft 10 located over shaft 11, and the latter over the solid shaft 12, and said shafts of unequal length, and having sheet operating arms 13 secured to their lower ends disposed parallel to each other.

The arm or plate 13 on shaft 11 is connected directly to the shaft, while the arms 13 on shafts 10 and 12 are connected to the said shafts by means of brackets 1 1, which position the arms or plates parallel with the plate 13 of shaft 11.

Supported between three pairs of flat springs are flattened hub portions 15 of segmental pinions 16, 17 and 18 respectively, located in a vertical series in the order given, from top to bottom, and the flattened sides of the hub portions normally engaged by springs l, hold these pinions 16, 17 and 18.

The shaft 12 is provided with a longitudinal groove or key-way 19 to receive a screw 20 in the upper pinion 16, and key the shaft and pinion to turn together, but permit vertical movement of the shaft in the pinion to adjust the height of arms 13, as will more fully hereinafter appear, and a nut 21 is screwed onto the upper end of shaft 12, to limit its downward movement.

On a cross bar 22 connecting uprights 3, and through which shaft 12 projects, a slid ing plate or catch 23 is mounted, and its movement is limited by a screw 24 secured to bar 22, and located in a slot 25 in the :atch 23. This catch is provided. with a slot 26 to receive shaft 12, and the rear portion of the wall of this slot is made with a locking flange 27, to engage in any of the grooves 19 in shaft 12, and support the shaft at a vertical adjustment, but permit it free turning movement. To elastically hold this catch in locked engagement with the shaft, a plunger 28 is fast to the end of the catch, and is movable in a perforated lu 29 on bar 22, and a head screw 30 is screwed into the end of the plunger, and a coiled spring 31 is positioned on the plunger between the perforated lug 29, and a washer 32 against the head of screw 30 to normally hold the catch in locking position, but permit it to be readily forced inward to release the shaft when it is desired to adjust the position of the arms 13.

Segmental pinion 17 is fixed upon a sleeve by means of a locking screw 34, and this sleeve 33 is made with an inwardly projecting longitudinal flange or key 35, to enter a longitudinal slot 36 in the tubular shaft 11, so as to lock the shaft 11, and sleeve 33, to turn together, but permit of vertical adjustment of shaft 11.

The pinion 18 is secured upon a sleeve 37 by means of a locking screw 38, and this sleeve 37 is provided on its inner face with a key-way 39 to receive a key 40 on shaft 10, so as to key the shaft and sleeve together, but permit a vertical movement of the shaft.

By reference particularly to Fig. 6, it will be observed that the brackets 14 securing the arms 13 to the shafts 10, 11 and 12 respectively, limit the independent vertical movement of the shafts, and as the bracket 14 of shaft 12 is lowermost, a vertical adjustment of shaft 12 will vertically adjust all of the shafts and their arms 13, and hence by manipulating catch 23 and moving the shafts vertically, they can be locked by said catch at the desired vertical adjustment.

41 represents a vertical shaft, which is supported in a bracket 42 secured on bed plate 2, and at its upper end in a plate 43 secured to bar 22. On this shaft 41 and arranged in a vertical series, are the hub portions 44 of levers 45, 46 and 47 respectively, and 48, 49 and 50 respectively, represent segmental racks fixed to the hub portions 44 of levers 45, 46 and 47 respectively, and meshing with the teeth of pinions 16, 17 and 18 respectively. These levers 45, 46 and 47,

are of the general angular shape shown, having rear-wardly projecting feet 51 at their rear ends, and located one above the other as shown.

On bed plate 2 at one side of levers 45, 4(3 and 47, a horizontal shaft 52 is supported in brackets 53, and a crank arm 54 is secured upon the shaft 52 between brackets 53,and is pivotally connected to its free end to a dog 55 of the peculiar shape shown most clearly in Fig. 8. This dog is elastically held in operative relation with arm 54 by means of a light spring 56, and a heavier spring 57 on shaft 52 engaging at its ends a bracket and crank arm 54 respectively, normally holds the dog in an inoperative position, and returns it to such position after an operation. This dog as shown in Fig. 8, is made with a long curved finger 58, projecting upwardly, so that when shaft 52 is turned, thus curved finger 58 will engage the uppermost foot 51, and turn the dog until the shoulder 59 at the end of the dog engages this foot, when the foot will be moved by the dog. In other words, the finger 53 prevents the dog from engaging any but the uppermost foot, and therefore compels the levers 45, 4G and 47 to be swung, one at a. time, and in regular rotation.

On bed plate 2, and. parallel to shaft 52, but at the opposite sides of levers 45, 46 and 47, a shaft (50 is supported in brackets (31, and a crank arm (52 is secured to this shaft, and pivotally supports at its free end a dog 63.

A light spring (34 normally holds the dog 63 in operative relation with the crank arm 62, and a spring (35 on shaft (30, and connected at its ends to a bracket 61 and crank arm 62 respectively, normally holds the shaft, crank arm and dog in inoperative position, and returns them to such position when permitted.

The dog 63 at its free end is provided with a curved finger S9, curving downwardly from the dog and adapted to engage the lowermost foot 51, and move the dog downwardly until. shoulder 90 at the end of the dog, engages the foot, when a continued movement of the dog will force the foot and its lever to the left of Fig. 1.

66 represents an operating shaft located between shafts 52 and 60, and supported in brackets 67. A long crank arm (38 is cured to this shaft (36, and is provided with a series of screw threaded openings (35) to receive in any of them a screw 70,t.o support curved links 71 and 72 respectively, and by positioning this screw in the various holes 69, the length of stroke imparted to the music leaf throwing arms 13 will be ad j usted, as will more fully hereinafter appear.

The link 71 is pivotally connected at one end to a crank arm 73 on shaft 52, while the other link 72 is pivotally connected to a crank arm 74 on shaft 60, and both of these links 71 and 7 2 are provided with lugs 75 at their ends, in position to be engaged by the edges of crank arm 68, as will be explained.

The shaft 66 is made angular at one end as shown at 76, to receive the angular socketed end 77 of a shaft 78, and be secured thereto by a screw 79. This shaft 78 projects rearwardly beyond the rear edge, of the piano illustrated at 80, in dotted lines in Figs. 10 and 11, and is provided with crank arms 81 at its rear end. These crank arms are connected by wires or rods 82 with treadles 83, fulcrumed between their ends upon brackets 84 on the bottom of the piano, and projecting forwardly in convenient position to be depressed by the operators feet to operate the music leaf turner.

The arms 13 may be provided with various means for coupling them to music leaves, such as the ordinary spring clamps 85 as illustrated, and a casing 86 is preferably provided to inclose the mechanism, and is removably held upon the base 1, by means of screws 87 and thumb nuts 88, but we do not of course limit ourselves to any particular construction or manner of securing the cas- 111g.

The operation is as follows: Fig. 1 illustrates the parts in a somewhat unusual position, to more clearly illustrate the mechanism behind lever 68. This position however, shows the parts as they would appear after the lever 47 has been swung to the left of Fig. 1, by means of dog 63, the latter is being returned to its normal position by its spring 65.

Then lever 68 is swung to the right of Fig. 1, it will engage the lug 75 of link 71, and through the medium of crank arm 7 3, turn shaft 52, and crank arm 54: on said shaft will move dog 55 toward the feet 51 of the levers i5, 16 and 47 respectively.

The curved finger 58 of dog 55 will engage the uppermost foot 51, which is the foot of lever 415, and as the dog is moved, its curved finger will ride along the foot until the shoulder 59 engages the foot, when a continued movement of the dog will force the lever 45 to the right. When this lever 15 moves to the right, its segmental rack 4-8 will turn pinion 16, and shaft 12 to throw the arm 13 of shaft 12, and the music leaf held thereby, so as to turn the leaf, and the engagement of flat springs 4 with the flattened hub portion 15 of pinion 16, will stop the arm and prevent banging against the piano. After throwing lever 45, the treadle 83 is released, when spring 57 will return the parts to their former position. A second operation of the treadle will throw the dog 55 as before, and this time it will throw lever 46 and turn pinion 17 and shaft 11 to turn the next sheet, and this operation repeated will throw lever 47 to turn pinion 18 and shaft 10.

If at any time it is desired to return a single sheet of music, so as to play over a portion of the music, the other treadle 83 is operated, which will swing lever 68 to the left of Fig. 1, to engage the lug 75 on link 7 2, and through the medium of crank arm 74, turn shaft 60. This shaft 60 will move dog 63, so that its curved finger 89 will contact with the lowermost foot 51, and a continued movement of the dog, by reason of the contact of this curved finger 89 with the foot 51, will move the dog, so as to engage shoulder 90 of the dog with the foot, when a continued movement of the dog will throw the lever back to its former position to return the page back to its former position. It will thus be observed that by operating the right and left treadles 83, the music leaves may be thrown, one at a time, in either direction, or if desired, all of the arms 13 may be grasped by the hand, so as to throw all of the arms in either direction to fold up the music, as there is nothing whatever to interfere with the independent swinging of the arms.

As heretofore explained, by reason of the construction of shafts 10, 11 and 12, and their connection with the several pinions 16, 17 and 18, these shafts are permitted vertical adjustment. This is a very desirable feature, because when the music leaf turner is supported upon the top of the piano, it is desirable to provide means which permit the arms to engage music leaves of various heights, which are of course supported upon the fixed rest on a piano, and to do this, applicants have devised the construction above explained, and by the simple manipulation of the spring catch 28, these shafts and their arms 13 may be moved to the proper vertical adjustment, and held at such adjustment by the spring catch.

Various slight changes might be made in the general form and arrangements of parts described without departing from our invention, and hence we do not restrict ourselves to the precise details set forth, but consider ourselves at liberty to make such changes and alterations as fairly fall within the spirit and scope of the claims.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is:

1. In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinally adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion, sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shafts, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, thus holding the shafts at various longitudinal adjustments, and means for independently turning said pinions.

In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinally adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shafts, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular'shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, and hold the shafts at various longitudinal adjustments, and comprising a spring held plate, having an opening to receive the solid shaft, and a locking flange in said opening to enter a groove in the solid shaft, and hold the shafts at their longitudinal adjustment, and means for independently turning said pinions.

5. In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinally adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion, sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shaft, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, and hold the shafts at various longitudinal adjustments, and comprising a spring held plate, having an opening to receive the solid shaft. and a locking flange in said opening to enter a groove in the solid shaft, and hold the shafts at their longitudinal adjustment, a plunger on said catch, a spring on said plunger normally holding said catch in locked engagement with the shaft, and means for independently turning said pinions.

at. In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinally adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion, sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shafts, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, thus holding the shafts at various longitudinal adjustments, means constructed to turn said shafts, one at a time, in one direction, and other means constructed to turn the shafts, one at a time, in the opposite direction.

In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinally adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion, sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shafts, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, and hold the shafts at 'arious longitudinal adjustments, and comprising a spring held plate, having an opening to receive the solid shaft, and a locking flange in said opening to enter a groove in the solid shaft, and hold the shafts at their longitu dinal adjustment, means constructed to turn the shafts, one at a time, in one direction, and other means constructed to turn the shafts, one at a time, in the opposite direction.

6. In a music leaf turner, the combination with a supporting frame, of a nested series of longitudinal adjustable shafts, comprising a solid shaft and tubular shafts around the same, a pinion on each of said shafts, the solid shaft keyed in its pinion, sleeves secured to the other pinions and keyed to the tubular shafts, permitting longitudinal adjustments of the latter, leaf turning arms secured to said shafts, brackets connecting said arms to the shafts, and the lowermost bracket secured to the solid shaft, whereby a longitudinal movement of the solid shaft will compel a corresponding movement of the tubular shafts, said solid shaft having a series of annular grooves, a locking device to engage in any of said grooves, and hold the shafts at various longitudinal adjustments, and comprising a spring held plate, having an opening to receive the solid shaft, and a locking flange in said opening to en ter a groove in the solid shaft, and hold the shafts at their longitudinal adjustment, a plunger on said catch, a spring on said plunger normally holding said catch in locked engagement with the shaft, means constructed to turn said shafts, one at a time, in one direction, and other means constructed to turn the shafts, one at a time, in the opposite direction.

7. In a music leaf turner, the combination with a supporting frame work, of a nested series of shafts, leaf turning arms secured to said shafts, a pinion on each of said shafts,

a vertical shaft, a series of levers mounted to swing on said vertical shaft, feet on said levers normally disposed one above the other, a movable dog having a curved finger and a shoulder, said curved finger constructed to engage the uppermost foot and guide the shoulder against the uppermost foot to move the lever in one direction, a second movable dog having a curved finger and shoulder, said curved finger constructed to engage the lowermost foot and guide the shoulder against the lowermost foot to move the lever in a direction opposite to the movement imparted by the first mentioned dog, springs returning said dogs to normal position, shafts, crank arms on the shafts to which said dogs are pivotally connected, springs elastically holding said dogs in operative position, an operating shaft, an operating crank arm on said shaft, other crank arms on said dog carrying shafts, links pivotally connected to said last mentioned crank arms and disposed at opposite sides of said operating crank arm, and lugs on said links in the path of movement of said operating crank arm, whereby the movement of said crank arm serves to move said dogs.

8. In a music leaf turner, the combination with a supporting frame work, of a nested series of shafts, leaf turning arms secured to said shafts, a pinion on each of said shafts, a vertical shaft, a series of levers mounted to swing on said vertical shaft, feet on said levers normally disposed one above the other, a movable dog having a curved finger and a shoulder, said curved finger constructed to engage the uppermost foot and guide the shoulder against the uppermost foot to move the lever in one direction, a second movable dog having a curved finger and shoulder, said curved finger constructed to engage the lowermost foot and guide the shoulder against the lowermost foot to move the lever in a direction opposite to the movement imparted by the first mentioned dog, springs returning said dogs to normal position, shafts, crank arms on the shafts to which said dogs are pivotally connected, springs elastically holding said dogs in operative position, an operating shaft, an operating crank arm on said shaft, other crank arms on said dog carrying shafts, links pivotally connected to said last mentioned crank arms and disposed at opposite sides of said operating crank arm, lugs on said links in the path of movement of said operating crank arm, whereby the movement of said crank arm serves to move said dogs, an extension shaft secured to the operating shaft, crank arms on the last mentioned shaft, treadles, and devices connecting the cross rods with said treadles.

9. In a music leaf turner, the combination with a supporting frame work, of a nested series of shafts, leaf turning arms secured to said shafts, a pinion on each of said shafts, a vertical shaft, a series of levers mounted to swing on said vertical shaft, feet on said levers normally disposed one above the other, a movable dog having a curved finger and a shoulder, said curved finger constructed to engage the uppermost foot and guide the shoulder against the uppermost foot to move the lever in one direction, a second dog constructed to engage in order the lowermost feet of said levers, and moving the levers in a direction opposite to the movement imparted by the first mentioned dog, crank shafts for moving said dogs, an operating crank arm having a series of screw threaded openings, a screw in one of said openings, and links connecting the dog operating crank shafts with said operating crank and supported on said screw.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

MARTIN SCHWEIBOLD. JACOB SCHWEIBOLD. Witnesses:

R. H. KRENKEL, -J. A. L. MULHALL. 

